A student prepared a {x} M solution of formic acid (HCOOH) and found its pH at 25 °C to be {y}. Calculate Ka for formic acid at this temperature.

Determine ΔHf⁰, ΔS⁰, and ΔGf⁰ for the following reaction. HCl (aq) + NaOH (aq) → NaCl (aq) + H2O (l) What is the ΔGf⁰ of HCl (aq)?

What is the pH of a 0.0037 M solution of H2CO3?  H2CO3 (aq) ↔ H+ (aq) + HCO3- (aq)             Ka1 = 4.3 × 10–7 HCO3- (aq) ↔ H+ (aq) + CO32- (aq)               Ka2 = 5.6 × 10–11

The Kb of cyanide ion (CN-) is 2.0 × 10-5 at 25.0°C. Calculate the pOH of a 0.20 M solution of CN-. Complete the ICE table (use commas to separate answers values and x only you do not need to label the compounds). Initial  _______ Change _______ Equilibrium _______

The Kb of cyanide ion (CN-) is 2.0 × 10-5 at 25.0°C. Calculate the pOH of a 0.20 M solution of CN-.

Calculate the molar solubility of AgCl in 0.020 M of AgNO3. Ksp of AgCl is 1.6 x 10-10. What is the correct Ksp equation for this reaction?

Using Le Chatelier’s principle determine the direction the reaction will proceed, when a catalyst is added. 2Na(s) + 2H2O (l) →{“version”:”1.1″,”math”:”→”} 2NaOH (aq) + H2 (g)   ΔH = -368.6 kJ

The reaction 2NOBr (g)  →  2 NO (g) + Br2 (g)  Has an initial concentration of NOBr is 440 M with a rate constant of 0.800 M-1s-1 at 30°C. What is the concentration of NOBr after 63.0 seconds?

When the a newborn’s cheek is touched, they instinctively turn their head toward the stimulus to help the newborn locate the mother’s breast for feeding. What is this reflex called?

A person groups objects together because they are close to each other. Which Gestalt principle is this?